A quiet but powerful point tucked behind the ear. Wangu (GB-12) calms the mind, clears the head and releases the neck — where tension, headache and restless nights converge.
Contraindications
Wangu (GB-12) is a well-established and widely used scalp-base point. No special contraindications are noted in the classical sources; simply observe the recommended depth and avoid aggressive needling given the proximity to the skull.
Name & story
The name 完骨 Wangu means "Mastoid Bone" — the rounded bony prominence behind the ear that you can feel with a fingertip. The point sits right in the depression behind and below that bone. In classical anatomy, 完 (wán) means complete or whole, and 骨 (gǔ) means bone. So the name is simply a landmark: the point lives at the mastoid process, one of the most easily located bony guides on the skull. Simple and direct — the ancients named it for exactly what the fingers find.
Point family & character
Wangu (GB-12) belongs to the Gallbladder Meridian (GB). It is one of the points where the Gallbladder channel meets the Bladder Meridian (BL) — making it a useful crossing point in the region of the head and neck.
Five-element dynamics
The Gallbladder is the Yang channel of the Wood element — the element of movement, decision, rising energy and smooth flow. When Wood is obstructed or rises too sharply upward, the result is tension in the neck, headache at the temples or sides, restless sleep and an unsettled mind. Wangu (GB-12), sitting just behind the ear at the base of the skull, is perfectly placed to draw that rising energy down, release the hold of Wind and calm the spirit. It works close to the head where Wood's energy tends to accumulate.
Location
Find the bony bump behind the ear — the mastoid process. Wangu (GB-12) sits in the hollow just below and behind that bump, at the posterior border of the sternocleidomastoid muscle where it meets the base of the skull.
Anatomy & fascia
The point lies posterior and inferior to the mastoid process, in the depression at the insertion of the sternocleidomastoid muscle.
Needling
The needle is inserted obliquely, directed toward the tip of the nose or downward.
Safe depth
0.5–0.8 Cun.
Moxa, cupping & Tui Na
The point responds well to firm acupressure — pressing slowly into the hollow behind the mastoid bone can release neck tension and ease a headache quickly. Gentle massage of the whole area behind the ear and down the sternocleidomastoid muscle adds to the effect. Moxa is used here cautiously and only when there is clear Cold or Yang Deficiency without signs of Heat.
Functions
Subdues Wind and clears Heat. Relieves pain and benefits the head. Relaxes the sinews of the neck and shoulders. Calms the Shen and quiets the mind. Activates the Gallbladder Meridian (GB) channel in the head region.
Indications
Headache, heaviness of the head, one-sided head pain. Stiffness and pain in the neck, inability to turn the head. Insomnia and difficulty falling asleep. Swelling of the cheeks, toothache, pain of the jaw. Epilepsy. Eye disorders. Weakness or paralysis of the face (facial palsy). Febrile conditions with neck rigidity.
Mind & spirit (Shen)
Wangu (GB-12) has a quiet relationship with the Shen. The Gallbladder governs decisiveness, and when its Qi rises upward without order — carrying Heat or Wind into the head — sleep becomes fitful, the mind keeps turning and cannot settle. By releasing the base of the skull and calming the channel's upward surge, this point helps the mind find stillness at night. It is especially valued when insomnia is accompanied by tension in the neck and temples, as though the body itself is holding on too tightly to let sleep arrive.
Point combinations
With GB-20 (Fengchi) and BL-10 (Tianzhu) — for headache, neck stiffness and Wind patterns affecting the head. With GB-20 (Fengchi) — for insomnia and restlessness arising from the Gallbladder channel. With local points along the jaw and face — for toothache, swelling of the cheek and facial pain. With GV-16 (Fengfu) — for Wind invading the head with neck rigidity.
Clinical spotlight
Wangu (GB-12) is one of the classic points of the posterior skull — a zone where the Gallbladder channel sweeps around the head before descending into the neck. Clinically it shines brightest in two situations: neck pain and tension headache, especially one-sided or temporal pain that follows the Gallbladder channel's path; and insomnia with physical holding in the upper body — that tense, wound-up state where the head will not quiet down at night. Its crossing with the Bladder Meridian (BL) also gives it reach into Wind patterns and febrile conditions with stiff neck, a combination the classics recognised in treating early-stage exterior disorders affecting the head.
The golden tip
To ease a tension headache or a stiff neck, reach both hands behind your head and let your fingertips find the bony bumps behind each ear. Just below and behind each bump there is a small natural hollow — that is Wangu (GB-12). Press gently but firmly, hold for a slow breath, and release. A few rounds of this, combined with slow neck rolls, can release surprising amounts of tension. It is also a lovely point to press before bed if you carry stress in your neck and find it hard to switch off.
For education only — not medical advice. Consult a qualified practitioner.